White mustard is an herb. The seeds are used to make medicine. People take white mustard for “clearing the voice,” preventing infection, causing vomiting, increasing urine flow (as a diuretic) to relieve water retention, and increasing the appetite.
White mustard is safe when consumed as food. But there is not enough scientific information available to know if it is safe when used as a medicine that is taken by mouth or applied to the skin. Applying white mustard to the skin for an extended per